Arrow insert



FIG. 1 is a front perspective view of an arrow insert, showing my new design;

FIG 2 is a bottom plan view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a side elevation view thereof; other sides being identical thereto; and,

FIG. 5 is a bottom perspective view thereof.

The broken lines in the figures represent the unclaimed portion of the design only and form no part of the claim. 

CLAIM The ornamental design for an arrow insert, as shown and described. 